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    Electron shells in chemistry?

    I have no idea, how to do this can someone explain? The question is asking.... How many electron shells would be completely filled by a neutral atom of chlorine? And how many will be left over? Options: a. 1 shell filled, 7 electrons left b. 1 shell filled, 1 electron left over c. 2 shells...
  2. W

    Can someone help me with moles in chemistry?

    I don't get any of it, so I was wondering if anyone may help me solve these problems! Calculate the mass of 1.58 moles CH4 [molar mass CH4=16.00 g/mol] AND What is the mass 7.29 moles of CO2? AND How many molecules are there in a 0.00583 mole sample of H20?
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